Vacuum cleaner



FIG. 1 is a front, top and left side perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a top, front and left side view thereof;

FIG. 8 is a second perspective view thereof showing an alternate bottom configuration; and,

FIG. 9 is a third perspective view thereof showing an alternate bottom configuration.

The different bottom configurations shown in FIGS. 1, 8 and 9 are not part of the claimed design. All broken line details form no part of the claimed design. 

The ornamental design for a vacuum cleaner, as shown and described. 